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3 years ago

Please simplify, 50 points. (sin Θ - cos Θ) - (sin Θ + cos Θ)^2

Mathematics

1 answer:

Amanda [17]3 years ago

8 0

Answer:

Using x for Θ:

(sinx - cosx)^2 - (sinx + cosx)^2

= (sin^2 x - 2sinxcosx + cos^2 x) - (sin^2 x + 2sinxcosx + cos^2 x)

= - 2 sinx cosx - 2 sinx cosx

= - 4 sinx cosx

= - 2sin(2x)

Step-by-step explanation:

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Step-by-step explanation:

Given:

Rob is saving to buy a new MP3 player.

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Percentage of amount he saved can calculated by Amount saved divided by total money earned and then multiplying by 100.

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